We share a van with them out of ROC in the early mornings and the only things I notice are that they never talk about or mention their airline and only tell you who they work for if you ask (and I always ask, just to hear them say it.) Another thing worth mentioning is the lanyards that I have seen, every one of them is anything and everything but GoJets.
I have not seen many but have had a crew on each of my last 5 trips to ROC in the van and their has been consistency.